Every day, the world’s master of disguise, the cuttlefish, finds new ways to blend into its ever-changing surroundings in search of its next meal. Cuttlefish are so good at imitation that they can instantly transform into a black-and-white chessboard or any other surrounding that mischievous researchers can think of.

Different parts of
your skin sport wildly different sensitivities
to the world around you. If our skin were
sensitive all over,
we would be
in big trouble. Why are certain spots more
ticklish than others?